Allen & Overy (A&O) has held onto the top spot in the latest quarterly international debt capital markets rankings, advising deal managers on 130 deals worth $54.6bn (£27.6bn).

Thomson Financial’s rankings show the firm held onto a 6.5% share of the underwriting market from January to April this year. Linklaters remains in second place having advised on 73 deals worth $49.3bn (£25bn), representing a 5.8% share of the market.